/*
 * @BEGIN LICENSE
 *
 * Psi4: an open-source quantum chemistry software package
 *
 * Copyright (c) 2007-2025 The Psi4 Developers.
 *
 * The copyrights for code used from other parties are included in
 * the corresponding files.
 *
 * This file is part of Psi4.
 *
 * Psi4 is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * Psi4 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with Psi4; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * @END LICENSE
 */

#ifndef DEFINES_
#define DEFINES_

#define ID(x) ints->DPD_ID(x)
#define index2(i, j) ((i > j) ? ((i * (i + 1) / 2) + j) : ((j * (j + 1) / 2) + i))
#define index4(i, j, k, l) index2(index2(i, j), index2(k, l))
#define index3(i, j, k) (i * (i + 1) * (i + 2) / 6) + (j * (j + 1) / 2) + i
#define idx2(i, j, Nj) j + (i * Nj)
#define idx3(i, j, k, Nj, Nk) k + (j * Nk) + (i * Nj * Nk)
#define idx4(i, j, k, l, Nj, Nk, Nl) l + (k * Nl) + (j * Nk * Nl) + (i * Nj * Nk * Nl)
#define idx_asym(i, j) ((i > j) ? ((i * (i - 1) / 2) + j) : ((j * (j - 1) / 2) + i))

#define MIN0(a, b) (((a) < (b)) ? (a) : (b))
#define MAX0(a, b) (((a) > (b)) ? (a) : (b))

#define DIIS_MIN_DET 1.0E-16
#define DIVERGE 1.0E+3

#endif /* DEFINES_ */
